mt76: mt7921: fix crash when startup fails.

From: Ben Greear <[email protected]>

If the nic fails to start, it is possible that the reset_work has already been scheduled. Ensure the work item is canceled so we do not have use-after-free crash in case cleanup is called before the work item is executed.

This fixes crash on my x86_64 apu2 when mt7921k radio fails to work. Radio still fails, but OS does not crash.

---
 drivers/net/wireless/mediatek/mt76/mt7921/main.c | 1 +
 1 file changed, 1 insertion(+)

index 6073bedaa1c08..9b33002dcba4a 100644
@@ -272,6 +272,7 @@ static void mt7921_stop(struct ieee80211_hw *hw)
 
 	cancel_delayed_work_sync(&dev->pm.ps_work);
 	cancel_work_sync(&dev->pm.wake_work);
+	cancel_work_sync(&dev->reset_work);
 	mt76_connac_free_pending_tx_skbs(&dev->pm, NULL);
 
 	mt7921_mutex_acquire(dev);

2.26.3